I am trying to remove a portion of a box wall. I have sketched a rectangle on a face of the box, confirmed it is on the face but when I extrude to go through the wall and remove material it goes through the wall and then starts adding material on the other side. On Line it says to go to extrude in tools and do Boolean subtraction. I do not have that option under tools>extrude. My only option are one sided or symmetric. It is also specific to this one project, I tried it on another and it worked as expected. I am using a MacBook Air with an M1 chip.
https://support.shapr3d.com/hc/en-us/requests/new
Sometimes it cannot subtract the body, thats why it is adding. Maybe you’ll see “operation failed due to xyz” try “dragging” the “extrusion” very slowly until it doesnt remove anymore but starts adding and then you know where the problem lays. Lets say u want to remove 3mm but with the “negative” extrusion u get a 2nd body, try removing 1mm and see if that works. Sometimes out of 3mm (in this example) it only allows you to remove 2.2mms. This can be due to various reasons such as invalid body or something else. I hope this helped!
Ps: try changing that specific area so the eztrusion works